弧面分度凸轮机构的固有频率分析  

Natural frequency analysis of globoidal indexing cam mechanism

作　　者：周世才[1] 沈煜[1] 沈兆光[1] 

机构地区：[1]天津大学机械工程学院,天津300072

出　　处：《机械设计》2011年第2期49-53,共5页Journal of Machine Design

基　　金：国家自然科学基金资助项目(50675150)

摘　　要：以弧面分度凸轮机构为对象,建立了考虑其输入/输出轴的扭转、弯曲刚度及凸轮曲面与滚子间接触刚度等多种因素的动力学模型,在此基础上,重点分析接触刚度、凸轮与分度盘滚子啮合个数的变化、运动规律对系统固有频率的影响。实验结果表明,所建立的动力学模型具有较高的计算精度。By taking globoidal indexing cam mechanism as the research object,an elastodynamic model was formulated by taking into account of many factors as the torque,bending rigidities of the input/output shafts,and contact stiffness between cam curved surface and rollers,and etc.Based on this,the influences on natural frequency of the system by contact stiffness,the numbers of the rollers meshed with the cam and the motion laws were analyzed selectively.The experimental result shows the established dynamical model has much higher calculation accuracy.

关 键 词：弧面分度凸轮机构 接触刚度 运动规律 固有频率 

分 类 号：TH112.2[机械工程—机械设计及理论] TH112.4